棉花学报2025，Vol.37Issue(2)：106-118,13.DOI:10.11963/cs20240068
缩节胺滴施对干播湿出棉花株型特征及产量的影响
Impact of 1,1-dimethyl piperidinium chloride through drip irrigation on plant architecture characteristics and yield of cotton under the dry-sowing and wet-emergence planting mode
摘要
Abstract
[Objective]This study aims to explore the effects of applying different amounts of 1,1-dimethyl piperidinium chloride(DPC)through drip irrigation on cotton plant architecture characteristics and yield traits under dry-sowing and wet-emergence planting mode,and to screen the optimal amount of DPC,so as to promote the simplified chemical manipulation of cotton.[Methods]Field experiments were conducted in Shawan City,Xinjiang,from April 2023 to October 2024.The control treatment(CK)was established with foliar application of 315 g·hm-2 DPC.Four treatments were set up with different drip application rates of DPC:315 g·hm-2(D1),630 g·hm-2(D2),1 260 g·hm-2(D3),and 1 890 g·hm-2(D4).The effects of drip-applied DPC on cotton plant height,plant width,stem diameter,and other plant architecture characteristics,as well as leaf area index(LAI),and yield traits were investigated.[Results]In 2023 and 2024,cotton plant height,internode length of main stem,cotyledon node height,plant width,fruiting branch length,number of fruiting branches per plant,height of the first fruiting branch node,and LAI all decreased with the increasing amount of DPC through drip irrigation.There were no significant differences between D2 and CK treatment in plant height,cotyledon node height,plant width,vegetative shoot length,stem diameter,fruiting branch number per plant,first fruiting branch node and its height,plant height-width ratio,fruiting node number-fruiting branch number ratio,and LAI(except for peak boll-setting stage in 2023).There were no significant difference in harvest density and lint percentage among different treatments.Compared with CK treatment,the boll weight of D1-D4 treatment and the boll number per plant of D1 and D2 treatment were no significant difference,and the boll number per plant of D3 and D4 treatment were significantly reduced.The seed cotton yield of D2 treatment showed no significant difference with CK,and it was higher than that of D1 treatment,and significantly increased by 19.7％to 20.0％and 27.1％to 49.6％,respectively compared with D3 and D4 treatments.[Conclusion]The application of 630 g·hm-2 DPC through drip irrigation under the dry-sowing and wet-emergence planting mode in cotton fields of northern Xinjiang can effectively regulate the plant architecture of cotton,ensuring high cotton yield.关键词
棉花/干播湿出/滴施/缩节胺/株型特征/产量/新疆Key words
cotton/dry-sowing and wet-emergence/application through drip irrigation/1,1-dimethyl piperidinium chloride/plant architecture characteristics/yield/Xinjiang引用本文复制引用
伍林,何洪涛,李承聪,徐文修,娄善伟,刘昊,唐江华,孟令贻,房彦飞,桑军民..缩节胺滴施对干播湿出棉花株型特征及产量的影响[J].棉花学报,2025,37(2):106-118,13.基金项目
新疆维吾尔自治区重大科技专项(2023A02003) （2023A02003）
新疆维吾尔自治区研究生实践创新项目(XJ2024G133) （XJ2024G133）
